The utility model relates to an anti channeling automobile water pump, which comprises a front cover, a tail cover and a pump body. The front cover and the tail cover form a motor shell together. The motor shell is provided with a water isolating sleeve, which divides the inner cavity of the motor shell into a stator cavity and a rotor cavity. A sealing component is arranged between the water isolating sleeve and the motor shell, and a stator component is arranged in the stator cavity. The centers of the front cover and the tail cover are respectively provided with matched front covers The shaft hole and the rear shaft hole are respectively provided with the front graphite bearing and the rear graphite bearing in the front shaft hole and the rear shaft hole, the front end and the rear end of a rotating shaft pass through the inner holes of the front graphite bearing and the rear graphite bearing respectively, the rotating shaft is also fixedly provided with a rotor and a thrust bearing seat, the front end of the thrust bearing seat is provided with a thrust bearing, the front end of the rotor matches the rear end of the thrust bearing seat, and the thrust bearing Corresponding to the matching at the rear end of the front graphite bearing, there is a gap between the rear end of the rotor and the front end of the rear graphite bearing; the front cover is provided with a water hole, which makes the pump body and the rotor cavity through; the distance between the front end of the impeller and the inner wall of the pump body is greater than the gap distance. The utility model adopts the combined structure of front and rear graphite bearings and thrust bearings to eliminate the axial displacement phenomenon and improve the overall performance of the automobile water pump.
【技术实现步骤摘要】
一种防窜动汽车水泵
本技术涉及水泵
,具体是一种防窜动汽车水泵。
技术介绍
直联式汽车水泵,通常包括永磁电机、泵体与叶轮,叶轮处于泵体内,永磁电机的转轴连接叶轮,且叶轮与转轴之间呈相对固定状态。在工作时,存在着转轴轴向窜动,其主要原因如下:1、转轴与转子可能会发生相对运动。转子铁芯与轴为过盈配合,如果由于某种原因导致铁芯孔与电机轴铁芯位出现间隙,导致转子铁芯与轴之间出现轴向和径向相对位置的变化,表现为窜轴问题的同时,很可能会因为转子铁芯的轴向移动,致使端盖与转子端部相擦、变形,严重时会波及到定子绕组。2、轴向调节弹垫损坏或漏装。整机设计过程中,会考虑电机材料热膨胀因素,在轴向留有一定的间隙,同时为了防止轴向位移过程中的硬接解触,采用加装弹垫的方式解决,如果装配过程中漏装,或是弹垫的质量有问题,都会导致轴向止动失效,也就直接表现为窜轴。3、电机定转子磁力中心线自对正调节导致的窜动。电机最理想的状态是定子与转子磁力中心线完全重合,但实际过程中定转子很难实现轴向完全的对正,为此电机运行过程中会出现持续不断的对正→偏移→对正→偏移→……的自对正调节过程,特别是对于径向通风道铁芯、铁芯的飘曲、马蹄等问题的情形,反复的调节过程更为严重,这就出现了轴向窜动。4、端盖轴承室配合松动导致的窜动。对于轴向冲击因较大的场合,对于端盖轴承室与轴承的配合比较敏感,特别是对于安装密封轴承的小规格电机问题更为严重,为了防止该问题的发生,应在端盖上增加孔用止动挡圈。所以,在设计直联式汽车水泵时,必须使叶轮的端面与泵体的内壁之间的间距大于永磁电 ...
【技术保护点】
1.一种防窜动汽车水泵,其特征在于:包括前罩、尾罩与泵体,所述前罩与尾罩共同形成了电机壳体,所述电机壳体内设有隔水套,隔水套将电机壳体的内腔分隔成定子腔与转子腔,隔水套与电机壳体之间设有密封组件,所述定子腔内设有定子组件,所述定子组件包括内定子与外定子,所述外定子包裹在内定子的外侧,所述前罩、尾罩的中心分别设有相匹配的前轴孔、后轴孔,在前轴孔与后轴孔内分别设有前石墨轴承、后石墨轴承,一转轴的前端、后端分别穿过前石墨轴承、后石墨轴承的内孔,所述转轴上还固定套设有转子与推力轴承座,所述转子外包裹有不锈钢防水套,所述推力轴承座的前端设有推力轴承,所述推力轴承的内孔与转轴不贴合,所述转子的前端匹配对应在推力轴承座的后端,推力轴承对应匹配在前石墨轴承的后端,转子的后端与后石墨轴承的前端之间具有间隙;所述前罩上设有通水孔,所述通水孔使得泵体与转子腔贯通,叶轮固定在转轴的前端并处于泵体内;所述叶轮前端与泵体内壁之间的间隔距离大于间隙的距离。/n
【技术特征摘要】
1.一种防窜动汽车水泵,其特征在于:包括前罩、尾罩与泵体,所述前罩与尾罩共同形成了电机壳体,所述电机壳体内设有隔水套,隔水套将电机壳体的内腔分隔成定子腔与转子腔,隔水套与电机壳体之间设有密封组件,所述定子腔内设有定子组件,所述定子组件包括内定子与外定子,所述外定子包裹在内定子的外侧,所述前罩、尾罩的中心分别设有相匹配的前轴孔、后轴孔,在前轴孔与后轴孔内分别设有前石墨轴承、后石墨轴承,一转轴的前端、后端分别穿过前石墨轴承、后石墨轴承的内孔,所述转轴上还固定套设有转子与推力轴承座,所述转子外包裹有不锈钢防水套,所述推力轴承座的前端设有推力轴承,所述推力轴承的内孔与转轴不贴合,所述转子的前端匹配对应在推力轴承座的后端,推力轴承对应匹配在前石墨轴承的后端,转子的后端与后石墨轴承的前端之间具有间隙;所述前罩上设有通水孔,所述通水孔使得泵体与转子腔贯通,叶轮固定在转轴的前端并处于泵体内;所述叶轮前端与泵体内壁之间的间隔...
【专利技术属性】
技术研发人员:刘润民,
申请(专利权)人:台州易宏实业有限公司,
类型:新型
国别省市:浙江;33
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